Wrench.



T. H. LAVIER. WRENCH.

APPLICATION FILED APB; 30,1906.

W1 in eases PATENTED APR! 2, 1907.

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THOMAS H. LAVIER, OF DALLAS, TEXAS.

WRENCH.

Specification. of Letters Patent.

iatenteol April 2, 1907.

Application filed April 30, 1906. Serial No. 314,533.

To all whom it may concern:

of the main or rear saddle 19. The latter is Be it known that I, THOMAS-H. LAVIER, a -made substantially hollow in its upper part,

citizen of the United States, residing at Dallas, in the countyof'Dallas, State of Texas, have invented certain new and usefulImprovements in \Vrenches and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it apper-- tains to make and use thesame.

This invention has relation to wrenches generally, but is particularlydesigned for employment on pipes, and hence falls in the class commonlycalled pipe-wrenches.

It is the object of the invention to provide improvements that willenhance the efficiency of pipe-wrenches in points of strength, quicknessof action, durability, and certainty of operation, as well asimprovements that will make them capable of doing the work of ordinarypipe-wrenches, and, beside, of supplanting the functions of specially-designed tools 7 as, for mere example, that of chain tongs orwrenches.

Of the drawings, Figure l is a side elevation of my improvedpipe-wrench, partly broken away. Fig. 2 is a transverse section throughthe front saddle of the wrench. Fig. 3 is a transverse section throughthe rear saddle of the wrench.

In the drawings, 5 designates the handle and stationary bar provided onits forward end with a removable j aw 6.

7 designates the sliding or adjustable bar provided on its forward endwith a fixed jaw S, as is usual in wrenches of this class.

Immediately to the rear of the jaws is the front saddle or strap 9, thatpasses over the sliding bar and downward, engaging the sides of the saidbar and the sides of the fixed bar between two parallel ribs 10 and 11formed on the latter part.

12 is ahelical spring resting on the strap 13, connecting the lower endsof the saddle 9 below the bar 5 and at its upper end extendin up into arecess 14 in the bar 5. The sai spring operates to yieldably hold thesaddle 9 down on the bar 7.

The bottom surface of the bar 5, rearwardly of its j aw for a necessarydistance, is provided with what may be called rearwardly-inclined teeth15, that are adapted to fit and engage the forwardly-inclined teeth 16,formed on the upper side of the strap 17, extending longitudinallybetween the legs 18 through which the upper or sliding bar 7 passesandhas the aforesaid depending legs extending down and engaging thesides of the bar 5. i

The main sa'ddle 19 is formed with a partition 20, which is engaged bythe pending proj ection 21 on the rear end of the sliding bar 7 when thewrench is in use.

A bowed spring 22 is secured at its middle to the under side of the bar7 and has its ends resting upon the upper surface of the bar 5.

Its tendency is to yieldably hold the teeth 15 and 16 in engagement onewith the other, but at the same time to allow the main saddle to bedepressed and said teeth to be disengaged, so that the bar 7, with thesaddles, may be adjusted back and forth on the bar 5 to bring the jawsinto contact with the pipe.

A screw-tl1readed bolt 23 is tapped through the main saddle and passesthrough the bar 7, holding the latter in place and allowing of a slightrocking of the bar 7 thereon on operating the handle to release the pipegripped between the jaws.

It will be understood by those skilled in the art that in the operationof the wrench it will act with great force in tending to turn the pipegripped by the jaws and that there will be relatively little or notendency to crush the pipe between the jaws.

What is claimed as the invention is 1. In a pipe-Wrench, the combinationwith the handle-bar and its jaw, the niovable bar and its jaw, the frontsaddle engaging both bars, teeth on the handle-bar, the

main saddle on the movable bar provided with a partition extending fromside to side below the latter bar and having teeth engaging the teeth onthe handle-bar, the movable bar being further provided with a projectionto engage said partition.

2. In a pipe-wrench, the combination with the handle-bar and its jaw,vertical parallel ribs on the sides of the handle-bar in rear of itsjaw, teeth on the under side of said bar, of the front saddle extendingover the movable bar and downward along the sides of the handle-barbetween said vertical ribs, a spring interposed between the lower partof the forward saddle and the handlebar for drawing the said saddle downon the movable bar, the main saddle on the movable bar provided withteeth engaging the teeth on the handle-bar, means for maintaining themain saddle in position on the movable bar, and a spring disposedbetween the two bars and operating with a tendency to separate them andto keep the said teeth in engagement with each other, and adapted to becompressed to disengage the said teeth.

3. In a pipe-wrench, the combination of the handle and its jaw, the saidbar having teeth on its-under side and provided on its sides withvertical guides, of the movable bar and its jaw, the front saddleengaging both bars and arranged between the said vertical guides on thefixed. jaw, a spring interposed between the front saddle and the movablejaw andoperating with a tendency toseparate the same, the main saddle onthe movable bar provided with a partition extending from side to sidebelow the latter bar and having teeth engaging the teeth on thehandle-bar, the movable bar being furtller provided with a projection toengage the said partition.

4. In a pipe-wrench, the combination with the handle-bar and its jaw,the movable bar and its jaw, the front saddle engaging both bars, teethon the handle-bar, the main saddle on the movable bar provided with apartition extending from side to side below the latter bar and havingteeth engaging the teeth on the'handle-bar, the movable bar beingfurther provided with a proj ection to engage said partition, a springinterposed between the rearward part of the movable bar and the uppersurface of the fixed bar, and a screw-bolt tapped through the mainsaddle and having its shank passed through the movable bar.

In testimony whereof I affiX my signature in presence of two witnesses.

, THOMAS H. LAVIER. WVitnesses:

J. MANTOUX, H. S. BIRMINGHAM.

